LuLu is the free, shared-source macOS firewall that aims to block unknown outgoing connections unless explicitly approved by the user.




LuLu by Objective-See vs Little Snitch Comments
I've used Little Snitch for many years. However, after buying a new Mac I was faced with buying licences for a whole bunch of apps I had paid for several times in the past. Given this unwanted additional expense and the fact that I really don't need all the extra features of the later versions of Little Snitch, I decided to try alternatives. LuLu absolutely fits the bill for the purpose of stopping apps phoning home without your permission.
Free (Libre) Software is and will be always best for the humanity :)


- LuLu by Objective-See is Free and Open Source































































I Wanted a tool to replace Little Snitch, and this one is GREAT. It is Free, Open Source, and very lite weight.